Anti-air-suction anti-erosion submersed nozzle

• Main Authors: SUN LINLUAN, BAI GUANGZHAO, REN YANJUN
• Format: Patent
• Language: Chinese; English
• Published: 07.12.2021
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

The utility model discloses an anti-air-suction anti-erosion submersed nozzle, relates to the technical field of steelmaking continuous casting processes, and aims to solve the problems that a ceramic fiber cotton sealing washer is gradually deformed and damaged, and air is sucked between the submersed nozzle and a tundish upper nozzle along with rapid flowing of steel flow, so that molten steel is oxidized, and the quality of the molten steel is reduced. According to the technical scheme, the submersed nozzle is characterized by comprising a submersed nozzle body and an inner cavity penetrating through the two ends of the submersed nozzle body, a bowl opening part communicated with the inner cavity is arranged on the end face, in butt joint with a tundish upper nozzle, of the submersed nozzle body, an annular groove is formed in the inner bottom wall of the bowl opening part, and the annular groove is filled with an expanded graphite sealing ring; and a horizontal transition surface is connected between the